Booking.com Software Developer interview questions

4 challenges: 1. Given integers x,y,z and n find all integers from 1 to n that are multiples of x or y, and not of z. 2. Given 2 lists with reservations, find the ones missing from the second list. 3. Given a list of employees and their work schedule find their breaks. 4. The 4th is the hard one. You can find it by googling for "[Booking.com] Award Top K Hotels [OA] HackerRank"